13506783530 has 32 divisors (see below), whose sum is σ = 24586588368. Its totient is φ = 5341888000.

The previous prime is 13506783503. The next prime is 13506783533. The reversal of 13506783530 is 3538760531.

It can be written as a sum of positive squares in 8 ways, for example, as 6173087761 + 7333695769 = 78569^2 + 85637^2 .

It is not an unprimeable number, because it can be changed into a prime (13506783533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759824 + ... + 777396.

Almost surely, 2^13506783530 is an apocalyptic number.

13506783530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13506783530 is a deficient number, since it is larger than the sum of its proper divisors (11079804838).

13506783530 is a wasteful number, since it uses less digits than its factorization.

13506783530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18442.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 13506783530 in words is "thirteen billion, five hundred six million, seven hundred eighty-three thousand, five hundred thirty".